De zevensprong

I loved this show as a kid in 80s Germany. There is this mysterious cross road with 7 junctions. I recall the youngster on his motor bike, who changed his personality and/or entire person frequently. Genius idea. A red headed teacher, the main protagonist, buddied up with his pupils regarding that strange cross road. After all, he was the foreigner who was settling in for a living. Rewatching it now, some plot points feel a little out of place. A normal school class would not be so overly curious about a teacher's business. When the main protagonist withdraws from that class, as an example, the class start revolving around him. That doesn't feel real. When I watched the show as a kid, none of that stuck out. Loved it.